ns 
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The mixture in original paper sizes 
  
This problem can be overcome in a number of ways and it is 
principally a copy problem - for once the copy is finalised 
the duplication is easily accommodated.  Referencing must be 
carefully undertaken to ensure a correct flow of information 
to the user. This is particularly so if an original copy 
has been copied in parts. 
The fall off in quality of the copy images 
  
A microfiche is created as the result of a photographic 
process and is thereby committed to the vagaries of such 
a process for its completion. 
Quality begins first with the quality of the latent image 
on the film, a function of camera and lens quality, film 
suitability and film quality and finally the skill of the 
photographer in the photographic operation. 
Processing of the latent image is again a matter of 
subjective choice concerning the most suitable developer 
and developing equipment plus the objective and practical 
skills of the operator. 
It is perhaps unfortunate that the majority of microfiche 
created by automated systems of exposure and development best 
serve the needs of the most prolific form of data, namely, 
the printed word. Half tone copy is a poor relation and full 
tonal copy is often a disaster, unless special consideration 
is given to film choice. The duplicated microfiche, mostly 
in diazo and negative form continue the near total degradation 
of any pictorial image. 
The matter of copyright 
  
This is a big problem requiring special treatment, for the 
laws of copyright vary from one country to another. I have 
chosen to ignore it in this address apart from nominating it 
as an impediment to effective micro-republishing that requires 
special attention. 
Legality in a Court of Law 
The matter of the legality of microforms as documents of 
evidence in a Court of Law will again vary from country to 
country. It is unlikely to influence the adoption of I.S.P.R.S 
micro-republication of information but it should be understood 
as an impediment in special conditions. 
The matter of Updating information 
Dynamic applications of micro publishing systems demand a 
regular updating of information. For the most part this can 
be simply achieved by cancelling the original document in 
some way and supplanting a new document. There is a 
technology which allows a specially sensitised fiche to be 
Glendinning 11